We can work with a site that is 3" to 4" off-level.
For sites 4" to 12" off-level, there is a labor fee to level the site or cut the legs on site. Call for details
For sites that are more than 12" out of level, we cannot install the unit because the unit will be unstable. We have customers that have asked us to install the unit and they will sign a waiver. We cannot put you and the unit at risk so installing a unit that is more than 12" off level simply isn't an option.